Gas-stove.



E. V. COULSTON.

GAS STOVE.

APPLICATION FILED MAR.17, 1915.

Patented May 30, 1916.

jeans EARL COULSTON, OF CLEVELAND, OHIO, ASSIGNOR F ONE-HALF TO FRED. H. ZWILLING', OF CLEVELAND, OHIO.

GAS-STOVE.

Specification of Letters Patent. I

Patented May 8U, 1916..

To all whom it may concern:

Be'it known that I, EARL V. ConLsToN, a citizen of the United States, resident of Cleveland, county -of. Cuyahoga, and State of Ohio, have invented a new and usefulImprovement in Gas-Stoves, of which the following is a specification, the principle of the invention being herein explained, and the best mode in which I have contemplated ap-f plying that principle, so as to distinguish it from other inventions.

My invention relates to gas stoves and par-- ticularly to the upper part of the gas stove which includes the arrangement of burner, space for receiving the gases of combustlon and distribution of heat therefrom in con- The general object of the invention is to conserve the heat produced by combustion in the most economical and efficient manner and specifically to control the air-supply so that a maximum of heat may be produced and to restrict the zone to which suchheat is applied so as to permit the use of a maximum number of stove holes with a minimum number of gas burners.

It has hereto-fore been customary to form a single large space beneath the top of the stove in which the gas burners were disposed and with which they communicated indiscriminately in all directions, and furthermore the air was permitted to flow in from all sides of the burner without restriction. This arrangement was such that much heat was wasted and to such an extent that it was necessary in order to cook over the stove holes, to provide a gas burner for each of same.

A specific object of the invention therefore is to permit of such a restriction'and control of the path of travel of and concentration of the heat of combustion derived from each gas burner, that a cooking operation may be performed eflicientlyover a stove holerdirectly beneath which there is no gas burner.

The said invention consists of means hereinafter fully described and forth in the claims.

The annexed drawing and the following description set forth in detail certain means embodying my invention, the disclosed particularly set means, however, constituting but one of various mechanical forms in which the principle of the invention may be applied.

111 said annexed drawing Figure 1 represents a plan of a gas stove embodying my lnvention, with parts removed to disclose the elements beneath such removed parts. Fig. 2 represents a front elevation of the upper portion of, the stove. Fig. 3 represents a fragmentary detail longitudinal section taken upon the plane indicated by line 1IIIII in Fig. 1. Fig. 4: represents a fragmentary transverse section of the upper portion of the stove taken upon the plane indicated by line IVIV, Fig. 1. Fig. 5 represents a perspective view of one of the chan nel plates. Fig. 6 represents a perspective view of one of the boxes or frames whichsurround the burners.

The illustrated embodiment of my invention comprises the main frame 1 ofthe stove, the top of which is provided with two removable plates 2, each of which is formed with two stove holes 3, 3, a front hole and a rear hole, as shown. The usual space 4- is provided above the top 5 of theoven and the top plates 2 which communicate with the outlet flue 6 at the rear and with the atmosphere through the medium of air openings 7, 7, at the front. The burners 8, 8, are disposed in this-space 4, at the front and immediately below the front openings 3, as shown, as well as immediately behind the openings 7 ,-7, in the usual manner.' Each of these burners is provided with suitable gas connections connecting it with the main supply pipe w Surrounding each burner is a box 10, open at the top, bottom and front and whichrcsts upon the top plate of the oven 5, the open front being in contact with the front plate formed with the rear of the box is a lug 15 which forms a rest for the rear end of the the star-shaped burner 8 and to form a restricted opening around same which communicates with the chamber 19 formed around the latter by the walls of the box 10.

The side Walls of the channel plate extend upwardly to and are in contact with the bottom of the top plates 2 of the stove. This channel plate extends-rearwardly a distance such as to bring it at least partially below the rear stove hole 3, as shown in Fig. 5,

and at this rear end it communicates with the main space 4 and thus with the outlet flue 6.

The width of the channel plate is such i that the sides thereof include the stove holes, but so as to form a spacelaterally restricted and disconnected from the main plates 4. 'It w1ll therefore be seen that in 1 addition to the chamber 19, a chamber 20 is formed in the main space or compartment 4 which communicates at the front with the chamber 19 and at the rear with outlet flue. i

In the operation'of the above described device, the air enters the chamber '19 from the opening 7, passes upwardly around the burner 8'and through the restricted opening formed between theburner and the starshaped opening 16*, into the chamber 20. This air, however, entering a restricted chamber and then passing through a restricted opening and into a second restricted chamber, it will be noted that its zone of travel is restricted and that a pronounceddraft is thereby created during the combustion of the gas. This results in an increased supply of oxygen being supplied to the gas during combustion, and a maximum production of heat. The products of combustion then pass throughthe restricted zone or chamber formed by the channel plate and are directed and concentrated toward the area immediately below the second or'back stove hole from whence they emerge and are conducted out through the outlet-flue 6. This concentration of-these gases of combustion permits of a sufficient application of heat to the space below the second stove hole 'so that a cooking or heating operation can be conducted upon the latter in an economical and efiicient manner.

Having fully described my invention,

and an outlet-flue communicating 5 back of said first-named chamber.

what I claim anddesire to secure by Letters Patent is 1. In a gas-stove, the combination of the stove-frame having its top formed with a front and rear stove-hole, and provided with a compartment beneath such top; a member consisting of side and bottom walls and placed in said compartment so as to form a chamber in the upper part of same beneath said holes; said member formed with an opening in the front of its bottom wall; a member consisting of rear and lateral .walls forming a chamber in the 'front of said compartment and beneath said opening and communicating with the atmosphere; a burner in said second chamber; and an outlet-flue communicating with the back of said first-named chamber.

2. In a gas-stove, the combination of the stove-frame having its top formed with a front and a rear stove-hole, and provided with a compartment beneath such top; aremovable member consisting of side and bottom walls and placed in said compartment so as to form a chamber in the upper part of same beneath said holes; said member formed with'an opening in the front of its bottom wall; a member consisting of rear and lateral walls forming a chamber in the front of said compartment and beneath said opening and communicating with the atmosphere a burner in 'said second chamber; with the -3. In a gas-stove, the combination of the stove frame provided with an upper compartment having an outlet; a removable partition within said compartment and at the front thereof, forming the lateral and i rear walls of an interior chamber communicatingat the front with the atmosphere; a second removable member within said compartment and having bottom and sides, the

front of the bottom of which rests upon' the top of said first-named removable partition and the sides of which extend upwardly to the bottom of the top portion of the frame, said second member forming a chamber above said first-named chamber and communicating at the rear with said compartment; the front of the bottom of said second-named member being provided with an opening; and 'a burner projecting into the latter. v

4. In a gas-stove, the combination of the stove frame provided with an upper compartment having an outlet; a partition in the front of such compartment and forming the sides and rear of an interior chamber commumcatlng at the front with the atmosphere; a second member consisting of sides and bottom, the frontportion of such bottom resting upon said first-named member and the sides extending upwardly to W 3 f v the bottom of the stave to'p, said seeond-- "chambemend burner projecting into said 10 named member forming a chamber above .open'in' said second-named chamber andicommuni- Signed by me," this 5th day of February, eating at thefrear with siiiid conapartmint, 1915, v t e ottom 0 said secon meme I'mem 1 inclining upwardly. so asfto cause Said sec- A O L ond-named chamber to be of reduced height Attested by i, i

at the rear thereof; said bottom beingpro- HERMAN EIS LE, 1 I

vided with an opening above said. :fi 'st -named' I D. M. FINDLING. 

